Battery electric vehicles 2 Cost effectiveness 2 Plug in hybrid electric vehicles 2 Plug-in hybrid vehicles 2 cost-benefit analysis 2 electric vehicle Air pollution 1 Alternative fuel vehicles 1 Alternative fuels 1 Battery capacity 1 Clean vehicles 1 Commerce 1 Competition 1 Consumer preferences 1 Diffusion 1 Diffusion model 1 Dynamic preferences 1 Federal incentives 1 Federal policies 1 Forecasting 1 Incentive policies 1 Market penetration 1 Plug in Electric Vehicle (PEV) 1 Plug-in electric vehicles 1 Portugal 1 Representative sample 1 Secondary batteries 1 System Dynamics 1 System dynamics 1 System dynamics model 1